AQA A Level Physics复习笔记6.1.1 Circular Motion
Circular Motion Velocity?and?acceleration?are both?vector?quantities An object in?uniform circular motion?has a constant?linear?speed However, it is?continuously changing direction.?Since ve...
IB DP Maths: AA HL复习笔记1.6.2 Extension of The Binomial Theorem
How do I use the binomial theorem for fractional and negative indices? How do we use the binomial theorem to estimate a value? The binomial expansion can be used to form an approximation for a valu...
AQA A Level Physics复习笔记5.4.2 Required Practical: Investigating EMF & Internal Resistance
Required Practical: Investigating EMF & Internal Resistance Aims of the Experiment The overall aim of the experiment is to investigate the relationship between e.m.f and internal resista...
AQA A Level Physics复习笔记5.4.1 Electromotive Force & Internal Resistance
Electromotive Force When charge passes through a power supply such as a battery, it?gains?electrical energy The?electromotive force (e.m.f)?is defined as: The amount of chemical energy conve...
AQA A Level Physics复习笔记5.3.4 Potential Divider Circuits
Potential Divider Circuit When two resistors are connected in series, through Kirchhoff’s Second Law, the potential difference across the power source is divided between them Potential divid...
IB DP Maths: AA HL复习笔记1.6.1 Binomial Theorem
Binomial Theorem What is the Binomial Theorem? The?binomial theorem (sometimes known as the binomial expansion) gives a method for expanding a?two-term?expression in a bracket raised to a power A?b...
AQA A Level Physics复习笔记5.3.3 Electrical Energy & Power
Energy & Power In mechanics, power?P?is defined as the?rate of doing work The potential difference is the?work done per unit charge Current is the?rate of flow of charge Therefore...
IB DP Maths: AA HL复习笔记 1.5.2 Proof by Contradiction
What is proof by contradiction? Proof by contradiction?is a way of proving a?result is true?by showing that?the negation can not be true It is done by: Assuming the negation (opposite) of the resul...
AQA A Level Physics复习笔记5.3.2 Series & Parallel Circuits
Series & Parallel Circuits Current In a?series?circuit, the current is the?same?for all components In a?parallel?circuit, the current is split across the different branches (or junction)...
